Improvement in rotary engines



. M. GARDNER. ROTARY-ENGINE.

WlTNEssE's NVENTOR.

EETeEG n..TTENT JEFFERSON M. GARDNER, OF SILVER SPRING, TENNESSEE.

IMPROVEMENT IN ROTARY ENGINES.

Specication forming part of Letters Patent No. 176,616, dated April 25, 1876 application led February 19, 1876.

To all whom it may concern:

Be it known that I, JEFFERSON M. GARD- NER, of Silver Spring, in the county of Wilson and State of Tennessee, have invented a new and valuable Improvement in Steam or Water Engines; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification,

' and to the letters and figures of reference as shown. Through the center of the casing A` passes the horizontal shaft E, which isprovided on each side of the center partition G witha circular wheel, D, placed eccentrically on the shaft in such a manner that at one point of. its circumference it will always be in contact with the inside of thecasing. -The chest B connects with the interior of the casing on each side of the partition Cythrough a suitable aperture, and in each of said aper tures is hung an abutment, G, of substantially the form shown in '1, the upper end of said abutment following Vin its movement the curved rear side of the steam-chest.

These abutlnents or valves are hung at such a point that the portion below the pivot will contain enough more top surface so that it will hold a steam-joint on the wheelD when running.

The two wheels D D are set in opposite directions on the shaft E, so that when one abut ment is down the other is up, and vice versa.

The abutment-s Gserve both as cut-off valves and abutments, and by the use of the two there are no Vdead-points.

, Steam enters the chest through a pipe, H,

and fills the chest on both sides, and passes by the abutment or valve that is open into that side-of the casing rotating thewheel D therein, and as said wheel turns it raises the abutment or val-ve. The steam'rexhausts through a port, I, Linder each valve.

It will be observed that it is only for an instant that either valve is closed, and that is just at the time when theother valve is open to its fullest extent. As one valve or abutment gradually closes, the other opens in the same proportion, so that there is always the same size opening for the passage of` steam,

or, in other words, the same amount ot'lsteani` is always admitted into the casing, part on one side and part on the other side of the center partition. y

In connection with this engine I use an oiling device, (shown at J,) connected with the steam-pipe H above the throttle-valve therein, so that there can be power at all times to chest'will prevent the escape of oil through v the tube J.

To obviate this defect, the valve 1n the plpe o is open for rthe passage of steam through it, thereby forcing the oil downward through pipe J into the steam-chest.

What I claim as new, and desire to secure by Letters Patent, is

1. Ina rotary engine, the abutments and cut-off valves G Gf, provided with oil-channels on their upper faces and centrally pivoted in the steam-chest, in combination with the eccentric pistons D D, operating as de- I upper faces, substantially as and for the pur= scribed. pose set forth.

2. In it rota-ry engine,-the cut-off valves G In testimony that I claim the above I have G", provided with oil-channels on their faces, hereunto subscribed my name in the presence substantially us and for the purpose set forth. of two Witnesses.

3. The steam-inlet pipe H and oil-tube J, JEFFERSON M. GARDNER. connected together by the pipe o, having` a Witnesses: regulating-vulve,in combination Without-ofi T. L. COOK,

valves G G', having oil-channels upon their J. B. YEARGIN. 

